+ P

This is a discussion on + P within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; Pardon my naivete, but what does the + P designate?
My questions hopefully will get less basic as my reading continues. Purchased a couple of ...

+ P

Pardon my naivete, but what does the + P designate?

My questions hopefully will get less basic as my reading continues. Purchased a couple of books over the weekend, as suggested on this forum. Interesting stuff. Was able to purchase only 4 boxes of American Eagle 115gr fmj. It was my third store.